You will need to provide a $5000 deposit for each property you wish to bid on. 

Also the Voucher doesn't cover the security deposit which in most cases, I have to put my S8 tenants on a security deposit payment plan for those to get them qualified to move-in on my applications.

You can often charge a higher rate and/or deposit.

I hope you plan to start advertising/listing the units for lease and start to secure deposits.

I did not read the rules around security deposits. you may be allowed to use those funds and still file a small claims action for any remainder, but I can't imagine that it would be worth it if you have at least one month's rent in security deposit. 

So my folks that I fund do the normal stuff SEO  Direct Mail text and ( what I did) telemarketing. 

Earnest Money Deposit 3. 

My friend recently told me of this scenario where the person I lease to would perhaps then double book individuals and keep deposits. 

Only thing better would be initial deposit and then paid in full upon Certificate of Occupancy and punchlist complete.Of course, standard items should also be checked: licensed, insured, willing and able to pull all required permits, reference checks.I would also commonly avoid the cheapest bid you get.  

The point most are trying to make and the advice given is directed toward successful investing.